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Traction transformer for cophase power supply

A traction transformer, in-phase power supply technology, applied in transformers, fixed transformers, inductors, etc., can solve the problems of power supply interruptions affecting the continuous performance of train traction power and affecting system reliability, reducing land occupation, saving costs, The effect of excellent reactive power compensation

Inactive Publication Date: 2015-04-29
CHINT ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Most of the traction transformers used in the existing electrified railway power system are YNd11, Vv, Vx, and single-phase wiring. The disadvantage is that the traction power supply generally requires phase commutation, which will cause power supply breakpoints and affect the continuity of train traction power. play, affecting system reliability

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  • Traction transformer for cophase power supply

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Embodiment

[0011] As shown in FIG. 1 , it is a schematic structural diagram of a traction transformer for in-phase power supply. The traction transformer for in-phase power supply includes a main transformer 1 and a ladder transformer 2, and the main transformer 1 and the ladder transformer 2 are arranged in the same oil tank 4. The main transformer 1 and the ladder plug transformer 2 are connected by unequal Scott connection. The main transformer 1 and the ladder plug transformer 2 have different secondary voltages and capacities.

[0012] The manufacture of the same-phase power supply traction transformer of the present invention mainly includes iron core manufacture, coil manufacture, lead wire manufacture, device body assembly and traction transformer overall assembly. The main transformer 1 is composed of an iron core, a low-voltage coil, a high-voltage inner coil, a high-voltage outer coil, a high-voltage regulator coil, and leads. The inner coil, high-voltage outer coil and high-...

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Abstract

The invention provides a traction transformer for a cophase power system. The traction transformer is characterized by comprising a primary transformer and a teaser transformer which are arranged in the same oil tank and connected in an inequilateral Scott connection way. According to the combined type cophase supply supply scheme disclosed by the invention, the primary matching transformer can be cancelled, so that the floor space is reduced, the cost is saved, the system efficiency is improved. The traction transformer is a novel two-side feeding important part of a railway traction power supply system, so that sectional type power supply, measuring, governance negative sequence and phase slit at an transformer outlet are achieved, and the optical reactive compensation is realized.

Description

technical field [0001] The invention relates to a combined in-phase power supply traction transformer, which can be used in electrified railway power systems and belongs to the technical field of traction power supply transformers. Background technique [0002] Most of the traction transformers used in the existing electrified railway power system are YNd11, Vv, Vx, and single-phase wiring. The disadvantage is that the traction power supply generally requires phase commutation, which will cause power supply breakpoints and affect the continuity of train traction power. play, affecting system reliability. Contents of the invention [0003] The purpose of the present invention is to provide a combined traction transformer for power supply in the same phase for a new generation of traction power supply system. [0004] In order to achieve the above object, the present invention provides a traction transformer for power supply in the same phase, which is characterized in that...

Claims

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Application Information

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IPC IPC(8): H01F38/00H01F30/06B60M3/00
Inventor 李锦彪仲照龙马清邓海生
Owner CHINT ELECTRIC